Bran-duster



(No Model.) ,A 2 Sheets-Sheet l. J. B. ALLFREE.

BRAN DUSTER.

No.37327. Patented Nov.v15, 1887.

ATTEST. INVNTOR (No Model.) Y 2 sheets-,sheet 2. v

J. VB'. ALLPRLEE.

BEAN DUSTER. No. 373.327. Paten-ted Nov.-15, 1887.

INVENTUR UNITEDy STATES PATENT Carien.,

JAMES B. ALLFREE, OF CUMBEBLAND, MARYLAND.

BRAN-DUsTER.

SPECIFICATION `forming part of Letters Patent No. 373,327, dated November 15, 1887.

Application filcdJune 1, 1886; Serial No. 203,807. A (No model.)

bran-dusters; and it consists, substantially, in

such features of construction and combinations of parts as will be distinctly pointed out and claimed.

The objects of the invention will be more fully understood from the description hereinu after following, but it may be here stated,

briefly, that the principal object is to provide simplified and eectivedevices by which the lighter particles of bran will be carried through and out of the machine more rapidly than the` heavier particles, thus securing more action on the particles requiring the greatest amountV of treatment than is obtained by many former inventions of a like character; further, to supply simplified means or devices for adjusting the revolving brusheseinployed, either at one end or at both ends, simultaneously, as

. the case may require, Without opening or in any Way dismantling the machine, and so as to keep said brushes in proper relationship to `the Wire cylinder in which they revolve.

There have been former inventions for the accomplishment of like objects, but many are found to be more or less defective in operation,

- and, besides, resort is made to mechanism or devices substantially differing from such as are herein employed.

In the annexed drawings, Figure lis a longitudinal section of the practical operative parts of the machine. Fig. 2 is a cross-section of same, taken in the vertical plane indicated by dotted line w x on Fig. 1. f

In theannexed drawings, A represents the frame or case of the machine, provided on its interior With a iixedcylinder, B, composed in part of Wire O, of the usual construction, and in part of two metal plates, E E', having their inner surfaces grooved diagonally, a space, (t, being left between the plates, in which is fittedfthu's completing the cylinder,) an adjustable brush, F. The case is also provided at its head with an inlet, H, and at the tail77 with an outlet, T. Attached centrally to the ends of the case are bearings B', in which is adapted to be rotated the horizontal shaft G vby means of the pulley g. This shaft is made tubular and of such dimensions as to admit therod R, which has formed thereon at one part of its length the double collar m, and at another part has screwed thereon the nutu, the collar and nut being of such form and size as to fit neatly in the tubular shaft and to be capable of being moved freely therein.

On the inside of the machine, secured by suitable means to the shaft G, are spiders J J', having the ends of their arms bent, andadapted to have the levers K K'pivoted thereto. These levers are pivoted at or near their angle to the spiders J J', and are provided with curved slots a", in which studs protruding from the arms of sleeves N N' are received, so that their inner ends can be actuated by the said movable sleeves N N on the shaft G. The sleeves are adapted to receive and hold firmly the inner ends of the levers K K', and are arranged to slide longitudinally on the shaft G, and at the same time are prevented from rotating thereon by means of screw-pins s s', which are screwed into the sleeves, as shown, and pass through longitudinal slots in the shaft G far enough to take into or engage the nut n and the collar m.

. Brushes M, long enough to sweepthe whole length of the interior of the machine and of appropriate width, are attached to the outer ends of the levers K K', parallel to the axis of the shaft, as shown in Fig. 2. Said brushes are firmly held in position by the parts described, and are also free to rotate with the horizontal tubular shaft G, and are at the same time free to be adjusted at both ends bythe movement to or fro on the shaft of the sleeves N N', attached to the levers K K'.

Awhere it is provided at one end with a hole,o,

forthe reception of a pin or suitable instrument to grasp for rotating or moving said rod when desired.

IOC

It will now be seen that when the rod is rotated the nut a will be caused to travel to or fro as the rod is turned to the right or left, and the sleeve N will be made to travel with it by means of the screwpins s s', thus adjusting the head end of the brushes. It will also be seen, if the nuts p and p are loosened and the rod is adjusted or moved lengthwise without being rotated, that both the nut a and the collar on will traxf'el together with it, and that both slceveshT N', by means ofthe screwpins s s', will be caused to travel to or fro as the rod is moved, and that both ends of the brushes will be adjusted siniiultaneously.

It will further be seen that if the rod is rotated and then moved lengthwise, so as to restore the nut a to the position it had before the rotation of the rod, the sleeve N' will be caused to move in a corresponding direc tion, thus adjusting the tail end ofthe brushes.

The proper adjustment or trarnming is as certained by feeling the brush through the wire-cloth c, a suitable door in the casing being arranged to open :for that purpose, and when obtained thcjam-nuts I I" are screwed snugly to their places and secured by the 1ocknuts p p'. It will be noticed that the whole opera tion of tram ming the brushes is effected on the outside ofthe machine.

When bran is admitted to the cylinder throughv thc inlet H and the shaft G is caused to rotate rapidly, the lighter particles are driven against the wire cylinder and carried by the air-current, caused by the rotation 'of the brushes M, to the top of the machine more rapidly than the heavier particles, and as the brushes are parallel to the axis of the cylinder the bran particles could not be carried through the machine without the assistance of some other device. In order to effect thc object of carrying through the particles,vI employ the diagonally-grooved plates E E', placed in the upper part of the cylinder, whereby a screw action is set up with the tendency of carrying the particles coming in Contact therewith toward the vtail of the machine.

It is obvious that as the inlet and discharge orifices of the cylinder are open air will always be contained in said cylinder, and on revolving the brushes this contained air is disturbed, thus producing currents of it which tend to carry the lighter particles of material to the top of the machine more rapidly, as explained, and a further effect produced thereby is to keep the meshes of the wire cylinder clean or free from clogging, and also to cool the material as it is rubbed or brushed through said cylinder.

The brush F, interposed between the two grooved plates, serves to aid in the cleaning of the bran particles, and also as a stop to them in their passage from one plate to the other, causing the particles to halt in their course and fall toward the bottoni of the machine. The heavier particles fall so as to escape the brushes, while the lighter particles are caught and carried against the second plate, thus being carried forward and through the machine more rapidly than the heavier particles. The said brush F is held to its position and made capable of adjustment to its proper relation with the other parts by means oflugs q, fixed thereto, and suitable set-screws, q', attached to the lugs and taking into the frame ofthe machine.

I-Iaviug thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

I. The combination, with the fixed cylinder` having plates E It', wire-gauze c, and adjustable brush F, of the hollow shaft and rod It, the revolving brushes M, and devices operating in conjunction with said shaft and rod by which either end of the revolving brushes to,brushes M, the hollowslotted shaft, the

scrcw-rod therein, and a movable sleeve, of a pin attached to the sleeve and passing th rough the slot of the shaft, anda nut, a, on the'screwrod engaged by said pin, substantially as dcscribed.

5. In a bran-duster, the combination of a cylinder constructed as described and applied in a casing, the hollow slotted shaft G, the spiders J J', the screw-rod in said shaft G, the nuts on the ends thereof, the sleeves movable on this shaft, the nut n and collar m, the bent levers, the brushes IlI, having these levers pivotcd to them, and the sleeves, also having said levers pivotcd to them, substantially as described.

6. In a bran-duster, the combination of a suitable case, a cylinder therein composed of wire-gauze and diagonally-groovcd plates, an adjustable brush between said plates, a revolvingadjustablebrush,andmeans,describcd, for adjusting this brush at one end or both ends, as set forth.

7. In a brairdustei', the combination, with a spider, J', an adjusting-lever attached thcreto, brushes M, the hollow slotted shaft, the screw-rod therein, and a movable sleeve, of a pin attached to the sleeve and passing through the slot of the shaft, and a double collar, m, fitted to the screw-rod in which the pin enters, substantially as described.

8. In a bran-duster, the combination, with a case, ofa cylinder composed of wire-gauze c, diagonally-grooved plates E E', and a radi- IOC ally-adj ustable brush between said plates, and revolving -adjustable brushes, substantially as described.

9. In a bran-duster, the combination, with the spiders` J J', adjusting-levers attached thereto, and brushes M, the hollow slotted shaft, the screwrod therein, and the movable sleeves, of pins attached to the sleeves and passing through the slots of the shaft, and a nut, n, and double collar m on the serew-rod, in which the said pins enter, substantially as shown, and for the purpose described.

10. In a bran-duster, the combination, with a suitable ease and cylinder, of a hollow shaft,

a screw-rod passing th rough the shaft and carrying a nut, n, and a double collar, m, sleeves adapted to slide longitudinally-on the shaft,

`pins passing through slots in the shaft con- IIQSSGS.

JAMES B. ALLFREE. `Witnesses: EDGAR A. BROWN, LATHAM Davis.

Correction in vLetters Patent No.l 373,327.

It is hereby-certified that Letters Patent No. 373,327, granted November 15, 1887, upon the application of James B. lAllfree, of Cumberland, Maryland, for an improvement in Bran-Dusters, Was erroneously issued to the inventor as soie owner of the patent; that said Letters Patent should have been issued to said Allfree and Robert Shriver and Harrison Swartzwelcler, jointly, said Shriver and Swartzwelder being assignees of one-half interest therein; and that the proper correction has been made in the files and records of the case in the Patent .Ofce, and should be read in the Letters Patent that the same may conform thereto.

Signed, eountersigned, and sealed this 6th day of December, A. D. 1887.

D. L. HAWKINS, Acting Secretary of the Interior.

[SEAL] Countersigned:

BENTON J. HALL,

Commissioner of Patents. 

